He contrasts it with Catholics, and in that sense i kinda see his point. Then again, there are Judaic Africans, so it's obviously not that simple. His point was definitely to shame Ashkenazi people over inbreeding, and when i recently saw a post in /r/dataisbeautiful of a user showing a graph of his mother's Ashkenazi genealogy (probably the wrong term, but i don't remember the term they used for the graph), it was obvious that the different "branches" were relatively closely related, and the whole thing looped.